loxocosm

\\ˈläksəˌkäzəm\ noun

Etymology: International Scientific Vocabulary lox- + -cosm

: a device to show how the inclination of the earth's axis causes the day's length to vary from season to season

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loxocosm

(ˈlɒksəkɒz(ə)m)

[f. Gr. λοξό-ς oblique + κόσµ-ος world. Cf. F. loxocosme.]

‘An instrument to illustrate the effect of the obliquity of the earth's axis in different seasons upon the length of the day’ (Cent. Dict. 1890).